把一块含有45°角的直角三角板与两条长边平行的直尺如图放置（直角顶点在直尺的一条长边上）．若∠1=23°，则∠2= °．
We will go climbing tomorrow if the weather is f （晴朗的）．
The six﹣year﹣old American girl has learned hundreds of Chinese p （诗）．
My English teacher is always r （准备好的）with advice for our study and life．
It is helpful to have a clear i （想法）of what you want．
Please think t （两次） before you hand in your paper．
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